331 lines
8.5 KiB
C++
331 lines
8.5 KiB
C++
/*************************************************************************/
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/* gibberish_stream.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* http://www.godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "gibberish_stream.h"
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#include "servers/audio_server.h"
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int AudioStreamGibberish::get_channel_count() const {
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return 1;
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}
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static float _get_vol_at_pos(int p_pos, int p_len, int p_x_fade) {
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if (p_pos < p_x_fade)
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return float(p_pos)/p_x_fade;
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else if (p_pos>(p_len-p_x_fade))
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return float(p_len-p_pos)/p_x_fade;
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else
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return 1.0;
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}
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int AudioStreamGibberish::randomize() {
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if (rand_idx==_rand_pool.size()) {
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for(int i=0;i<_rand_pool.size();i++) {
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SWAP(_rand_pool[i],_rand_pool[Math::rand()%_rand_pool.size()]);
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}
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rand_idx=0;
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}
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return _rand_pool[rand_idx++];
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}
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bool AudioStreamGibberish::mix(int32_t *p_buffer, int p_frames) {
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if (!active)
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return false;
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zeromem(p_buffer,p_frames*sizeof(int32_t));
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if (!paused && active_voices==0) {
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active_voices=1;
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playback[0].idx=randomize();
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playback[0].fp_pos=0;
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playback[0].scale=Math::random(1,1+pitch_random_scale);
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}
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for(int i=0;i<active_voices;i++) {
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RID s = _samples[playback[i].idx]->get_rid();
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uint64_t fp_pos=playback[i].fp_pos;
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const void *data = AudioServer::get_singleton()->sample_get_data_ptr(s);
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bool is16 = AudioServer::get_singleton()->sample_get_format(s)==AudioServer::SAMPLE_FORMAT_PCM16;
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int skip = AudioServer::get_singleton()->sample_is_stereo(s) ? 1: 0;
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uint64_t max = AudioServer::get_singleton()->sample_get_length(s) * uint64_t(FP_LEN);
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int mrate = AudioServer::get_singleton()->sample_get_mix_rate(s) * pitch_scale * playback[i].scale;
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uint64_t increment = uint64_t(mrate) * uint64_t(FP_LEN) / get_mix_rate();
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float vol_begin = _get_vol_at_pos(fp_pos>>FP_BITS,max>>FP_BITS,xfade_time*mrate);
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float vol_end = _get_vol_at_pos((fp_pos+p_frames*increment)>>FP_BITS,max>>FP_BITS,xfade_time*mrate);
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int32_t vol = CLAMP(int32_t(vol_begin * 65535),0,65535);
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int32_t vol_to = CLAMP(int32_t(vol_end * 65535),0,65535);
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int32_t vol_inc = (vol_to-vol)/p_frames;
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bool done=false;
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if (is16) {
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const int16_t *smp = (int16_t*)data;
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for(int i=0;i<p_frames;i++) {
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if (fp_pos >= max) {
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done=true;
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break;
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}
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int idx = (fp_pos>>FP_BITS)<<skip;
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p_buffer[i]+=int32_t(smp[idx])*vol;
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vol+=vol_inc;
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fp_pos+=increment;
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}
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} else {
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const int8_t *smp = (int8_t*)data;
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for(int i=0;i<p_frames;i++) {
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if (fp_pos >= max) {
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done=true;
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break;
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}
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int idx = (fp_pos>>FP_BITS)<<skip;
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p_buffer[i]+=(int32_t(smp[idx])<<8)*vol;
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vol+=vol_inc;
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fp_pos+=increment;
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}
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}
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playback[i].fp_pos=fp_pos;
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if (!paused && active_voices==1 && (vol_end < vol_begin || done)) {
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//xfade to something else i gues
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active_voices=2;
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playback[1].idx=randomize();
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playback[1].fp_pos=0;
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playback[1].scale=Math::random(1,1+pitch_random_scale);
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}
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if (done) {
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if (i==0 && active_voices==2) {
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playback[0]=playback[1];
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i--;
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}
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active_voices--;
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}
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}
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return true;
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}
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void AudioStreamGibberish::play() {
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if (active)
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stop();
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if (!phonemes.is_valid())
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return;
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List<StringName> slist;
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phonemes->get_sample_list(&slist);
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if (slist.size()==0)
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return;
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_samples.resize(slist.size());
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_rand_pool.resize(slist.size());
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int i=0;
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for(List<StringName>::Element *E=slist.front();E;E=E->next()) {
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_rand_pool[i]=i;
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_samples[i++]=phonemes->get_sample(E->get());
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}
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rand_idx=0;
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active_voices=0;
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active=true;
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}
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void AudioStreamGibberish::stop(){
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active=false;
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}
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bool AudioStreamGibberish::is_playing() const {
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return active;
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}
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void AudioStreamGibberish::set_paused(bool p_paused){
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paused=p_paused;
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}
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bool AudioStreamGibberish::is_paused(bool p_paused) const{
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return paused;
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}
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void AudioStreamGibberish::set_loop(bool p_enable){
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}
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bool AudioStreamGibberish::has_loop() const{
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return false;
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}
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float AudioStreamGibberish::get_length() const{
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return 0;
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}
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String AudioStreamGibberish::get_stream_name() const{
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return "Gibberish";
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}
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int AudioStreamGibberish::get_loop_count() const{
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return 0;
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}
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float AudioStreamGibberish::get_pos() const{
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return 0;
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}
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void AudioStreamGibberish::seek_pos(float p_time){
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}
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AudioStream::UpdateMode AudioStreamGibberish::get_update_mode() const{
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return AudioStream::UPDATE_NONE;
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}
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void AudioStreamGibberish::update(){
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}
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void AudioStreamGibberish::set_phonemes(const Ref<SampleLibrary>& p_phonemes) {
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phonemes=p_phonemes;
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}
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Ref<SampleLibrary> AudioStreamGibberish::get_phonemes() const {
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return phonemes;
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}
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void AudioStreamGibberish::set_xfade_time(float p_xfade) {
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xfade_time=p_xfade;
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}
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float AudioStreamGibberish::get_xfade_time() const {
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return xfade_time;
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}
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void AudioStreamGibberish::set_pitch_scale(float p_scale) {
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pitch_scale=p_scale;
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}
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float AudioStreamGibberish::get_pitch_scale() const {
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return pitch_scale;
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}
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void AudioStreamGibberish::set_pitch_random_scale(float p_random_scale) {
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pitch_random_scale=p_random_scale;
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}
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float AudioStreamGibberish::get_pitch_random_scale() const {
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return pitch_random_scale;
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}
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void AudioStreamGibberish::_bind_methods() {
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ObjectTypeDB::bind_method(_MD("set_phonemes","phonemes"),&AudioStreamGibberish::set_phonemes);
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ObjectTypeDB::bind_method(_MD("get_phonemes"),&AudioStreamGibberish::get_phonemes);
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ObjectTypeDB::bind_method(_MD("set_pitch_scale","pitch_scale"),&AudioStreamGibberish::set_pitch_scale);
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ObjectTypeDB::bind_method(_MD("get_pitch_scale"),&AudioStreamGibberish::get_pitch_scale);
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ObjectTypeDB::bind_method(_MD("set_pitch_random_scale","pitch_random_scale"),&AudioStreamGibberish::set_pitch_random_scale);
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ObjectTypeDB::bind_method(_MD("get_pitch_random_scale"),&AudioStreamGibberish::get_pitch_random_scale);
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ObjectTypeDB::bind_method(_MD("set_xfade_time","sec"),&AudioStreamGibberish::set_xfade_time);
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ObjectTypeDB::bind_method(_MD("get_xfade_time"),&AudioStreamGibberish::get_xfade_time);
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ADD_PROPERTY( PropertyInfo(Variant::OBJECT,"phonemes",PROPERTY_HINT_RESOURCE_TYPE,"SampleLibrary"),_SCS("set_phonemes"),_SCS("get_phonemes"));
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ADD_PROPERTY( PropertyInfo(Variant::REAL,"pitch_scale",PROPERTY_HINT_RANGE,"0.01,64,0.01"),_SCS("set_pitch_scale"),_SCS("get_pitch_scale"));
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ADD_PROPERTY( PropertyInfo(Variant::REAL,"pitch_random_scale",PROPERTY_HINT_RANGE,"0,64,0.01"),_SCS("set_pitch_random_scale"),_SCS("get_pitch_random_scale"));
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ADD_PROPERTY( PropertyInfo(Variant::REAL,"xfade_sec",PROPERTY_HINT_RANGE,"0.001,0.5,0.001"),_SCS("set_xfade_time"),_SCS("get_xfade_time"));
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}
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AudioStreamGibberish::AudioStreamGibberish() {
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xfade_time=0.1;
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pitch_scale=1;
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pitch_random_scale=0;
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active=false;
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paused=false;
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active_voices=0;
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}
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